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Finding the Fourth Proportional to 10,879, 15,015.81 and 6,632.95

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Solution

The fourth proportional to 10,879, 15,015.81 and 6,632.95 is: 9,155.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,879 : 15,015.81 = 6,632.95 : x
  2. Step 2: Convert to fraction form
    10,879/15,015.81 = 6,632.95/x
  3. Step 3: Cross multiply
    10,879x = 15,015.81 × 6,632.95
  4. Step 4: Simplify right side
    10,879x = 99,599,116.94
  5. Step 5: Solve for x
    x = 99,599,116.94/10,879
  6. Step 6: Final answer
    x = 9,155.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.